CN103913815A - Optical imaging lens - Google Patents
Optical imaging lens Download PDFInfo
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- CN103913815A CN103913815A CN201310030138.1A CN201310030138A CN103913815A CN 103913815 A CN103913815 A CN 103913815A CN 201310030138 A CN201310030138 A CN 201310030138A CN 103913815 A CN103913815 A CN 103913815A
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- 238000012634 optical imaging Methods 0.000 title abstract 3
- 230000003287 optical effect Effects 0.000 claims description 76
- 238000003384 imaging method Methods 0.000 claims description 30
- 230000004075 alteration Effects 0.000 abstract description 33
- 201000009310 astigmatism Diseases 0.000 abstract description 24
- 239000000463 material Substances 0.000 description 66
- 229920003023 plastic Polymers 0.000 description 56
- 239000004033 plastic Substances 0.000 description 56
- 238000010586 diagram Methods 0.000 description 21
- 238000001914 filtration Methods 0.000 description 19
- 239000011521 glass Substances 0.000 description 11
- 230000000007 visual effect Effects 0.000 description 10
- 230000004304 visual acuity Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000001747 pupil Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
An optical imaging lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side in sequence. The first lens element with positive refractive power has a convex object-side surface. The second lens element with negative refractive power has a concave object-side surface. The third lens element with refractive power. The fourth lens element with refractive power. The fifth lens element with refractive power has a concave object-side surface and a convex image-side surface, wherein at least one surface of the fifth lens element is aspheric. The sixth lens element with refractive power has a concave image-side surface, wherein the object-side surface and the image-side surface of the sixth lens element are aspheric, and the image-side surface of the sixth lens element has at least one inflection point. When certain conditions are satisfied, astigmatism and various aberrations of the optical imaging lens are improved.
Description
Technical field
The invention relates to that a kind of optics ties as camera lens, and relate to especially a kind of miniaturization optics being applied on electronic product and tie as camera lens.
Background technology
In recent years, along with having the rise of portable type electronic product of camera function, the demand of optical system day by day improves.The photo-sensitive cell of general optical system is nothing more than being charge coupled cell (Charge Coupled Device, or complementary matal-oxide semiconductor sensor (Complementary Metal-Oxide Semiconductor Sensor CCD), CMOS Sensor) two kinds, and along with progressing greatly of manufacture of semiconductor technology, the Pixel Dimensions of photo-sensitive cell is dwindled, optical system, gradually toward the development of high pixel field, therefore, also increases the requirement of image quality day by day.
Tradition is equipped on the optical system on portable type electronic product, as United States Patent (USP) the 7th, 869,142,8,000, shown in No. 031, four of many employings or five chip lens arrangements are main, but prevailing due to high standard mobile devices such as intelligent mobile phone (Smart Phone) and flat computers (Tablet PC), drives optical system riseing rapidly in pixel and image quality, and known optical system cannot meet more senior camera chain.
The six chip optical frames groups though make further progress at present, as the U.S. disclose the 2012/0314304 No. A1 disclose, its second lens do not adopt the lens that have negative refracting power and can revise aberration, and its thing side surface face shape design is not enough to effectively revise astigmatism, and easily has the problem of the excessive unfavorable correction of aberration simultaneously.
Summary of the invention
Therefore, one aspect of the present invention is to provide a kind of optics and ties as camera lens, described optics knot has negative refracting power as the second lens of camera lens, contributing to revise light enters optics through first lens and ties the aberration producing as camera lens, and the thing side surface style characteristic of the second lens, be conducive to the correction of astigmatism, and can strengthen improving various aberrations.
According to an embodiment of the present invention, provide a kind of optics to tie as camera lens, extremely comprise successively first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens as side by thing side.Described first lens has positive refracting power, and its thing side surface is convex surface.Described the second lens have negative refracting power, and its thing side surface is concave surface.Described the 3rd lens have refracting power.Described the 4th lens have refracting power.Described the 5th lens have refracting power, and its thing side surface is concave surface, and it is convex surface as side surface, and at least one surface of wherein said the 5th lens is aspheric surface.Described the 6th lens have refracting power, and it is concave surface as side surface, its thing side surface and be all aspheric surface as side surface, wherein said the 6th lens there is at least one point of inflexion as side surface.The radius-of-curvature of described the second lens thing side surface is R3, and described the second lens are R4 as the radius-of-curvature of side surface, and described optics knot is f as the focal length of camera lens, and the focal length of described the 5th lens is f5, meets following condition:
-5.0< (R3+R4)/(R3-R4) <-0.4; And
-1.5<f/f5<0.8。
When (R3+R4)/(R3-R4) meet above-mentioned condition, described the second Lens Design is become to the more curved lens shape of thing side surface, be conducive to the correction of astigmatism, and can strengthen improving various aberrations.
In the time that f/f5 meets above-mentioned condition, can effectively revise Petzval and the number of described optics knot as camera lens, contribute to the focus of center and surrounding visual field more to concentrate on a pair of focal plane, to promote resolving power.
Brief description of the drawings
In order to allow, the present invention is above-mentioned can be become apparent with other object, feature, advantage and embodiment, and appended the description of the drawings is as follows:
Fig. 1 illustrates according to a kind of optics of first embodiment of the invention and ties the schematic diagram as camera lens.
Fig. 2 is followed successively by the optics knot of the first embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.
Fig. 3 illustrates according to a kind of optics of second embodiment of the invention and ties the schematic diagram as camera lens.
Fig. 4 is followed successively by the optics knot of the second embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.
Fig. 5 illustrates according to a kind of optics of third embodiment of the invention and ties the schematic diagram as camera lens.
Fig. 6 is followed successively by the optics knot of the 3rd embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.
Fig. 7 illustrates according to a kind of optics of fourth embodiment of the invention and ties the schematic diagram as camera lens.
Fig. 8 is followed successively by the optics knot of the 4th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.
Fig. 9 illustrates according to a kind of optics of fifth embodiment of the invention and ties the schematic diagram as camera lens.
Figure 10 is followed successively by the optics knot of the 5th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.
Figure 11 illustrates according to a kind of optics of sixth embodiment of the invention and ties the schematic diagram as camera lens.
Figure 12 is followed successively by the optics knot of the 6th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.
Figure 13 illustrates according to a kind of optics of seventh embodiment of the invention and ties the schematic diagram as camera lens.
Figure 14 is followed successively by the optics knot of the 7th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.
Figure 15 illustrates according to a kind of optics of eighth embodiment of the invention and ties the schematic diagram as camera lens.
Figure 16 is followed successively by the optics knot of the 8th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.
Figure 17 illustrates according to a kind of optics of ninth embodiment of the invention and ties the schematic diagram as camera lens.
Figure 18 is followed successively by the optics knot of the 9th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.
Figure 19 illustrates the schematic diagram of Fig. 1 optics knot as the parameter S AG51 of the 5th lens in camera lens.
[primary clustering symbol description]
Aperture: 100,200,300,400,500,600,700,800,900
First lens: 110,210,310,410,510,610,710,810,910
Thing side surface: 111,211,311,411,511,611,711,811,911
Picture side surface: 112,212,312,412,512,612,712,812,912
The second lens: 120,220,320,420,520,620,720,820,920
Thing side surface: 121,221,321,421,521,621,721,821,921
Picture side surface: 122,222,322,422,522,622,722,822,922
The 3rd lens: 130,230,330,430,530,630,730,830,930
Thing side surface: 131,231,331,431,531,631,731,831,931
Picture side surface: 132,232,332,432,532,632,732,832,932
The 4th lens: 140,240,340,440,540,640,740,840,940
Thing side surface: 141,241,341,441,541,641,741,841,941
Picture side surface: 142,242,342,442,542,642,742,842,942
The 5th lens: 150,250,350,450,550,650,750,850,950
Thing side surface: 151,251,351,451,551,651,751,851,951
Picture side surface: 152,252,352,452,552,652,752,852,952
The 6th lens: 160,260,360,460,560,660,760,860,960
Thing side surface: 161,261,361,461,561,661,761,861,961
Picture side surface: 162,262,362,462,562,662,762,862,962
Imaging surface: 170,270,370,470,570,670,770,870,970
Infrared ray filtering optical filter: 180,280,380,480,580,680,780,880,980
F: optics knot is as the focal length of camera lens
Fno: optics knot is as the f-number of camera lens
HFOV: optics knot is as the half at maximum visual angle in camera lens
V2: the abbe number of the second lens
V5: the abbe number of the 5th lens
CT3: the thickness of the 3rd lens on optical axis
CT5: the thickness of the 5th lens on optical axis
CT6: the thickness of the 6th lens on optical axis
T45: the 4th lens and the spacing distance of the 5th lens on optical axis
SAG51: the maximum effective diameter position of intersection point to the five lens thing side surfaces of the 5th lens thing side surface on optical axis is in the horizontal shift distance of optical axis
R3: the radius-of-curvature of the second lens thing side surface
R4: the second lens are as the radius-of-curvature of side surface
R5: the radius-of-curvature of the 3rd lens thing side surface
R6: the 3rd lens are as the radius-of-curvature of side surface
R9: the radius-of-curvature of the 5th lens thing side surface
R10: the 5th lens are as the radius-of-curvature of side surface
F5: the focal length of the 5th lens
F6: the focal length of the 6th lens
SD: aperture to the six lens are the distance on optical axis as side surface
TD: first lens thing side surface to the six lens are the distance on optical axis as side surface
Σ CT: first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens are respectively at the summation of thickness on optical axis
BFL: the 6th lens as side surface to imaging surface the distance on optical axis
TTL: first lens thing side surface is the distance on optical axis to imaging surface
Embodiment
A kind of optics is tied as camera lens, extremely comprises successively first lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens as side by thing side.
First lens has positive refracting power, and its thing side surface is convex surface, and it can be concave surface as side surface.Can suitably adjust thus the positive refracting power intensity of first lens, contribute to shorten the total length of optics knot as camera lens.
The second lens have negative refracting power, contribute to revise light and enter optics through first lens and tie the aberration producing as camera lens.The thing side surface of the second lens is concave surface, and it can be convex surface as side surface, contributes to revise astigmatism.At least one surface of the second lens has at least one point of inflexion, can effectively suppress from the light of axle visual field and be incident in the angle on Image Sensor, to increase the receiving efficiency of Image Sensor.
The thing side surface of the 3rd lens can be convex surface and exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.Thus, the effective aberration of modified off-axis visual field.
The 4th lens can have positive refracting power, and it can be convex surface as side surface.Thus, can reduce optics knot and make yield as the susceptibility of camera lens to promote.
The 5th lens can have negative refracting power, and its thing side surface is concave surface, and it is convex surface as side surface.Thus, can effectively revise Petzval and the number of optics knot as camera lens, contribute to the focus of center and surrounding visual field more to concentrate on a pair of focal plane, to promote resolving power.
The 6th lens can have negative refracting power, and its thing side surface can be convex surface, and it is concave surface as side surface.Thus, can make principal point away from imaging surface, to shorten back focal length, be conducive to maintain miniaturization.The 6th lens there is at least one point of inflexion as side surface, can effectively suppress from the light of axle visual field and be incident in the angle on Image Sensor, to increase the receiving efficiency of Image Sensor, aberration that further can modified off-axis visual field.
The radius-of-curvature of the second lens thing side surface is R3, and the second lens are R4 as the radius-of-curvature of side surface, meets following condition :-5.0< (R3+R4)/(R3-R4) <-0.4.Thus, the second Lens Design is become to the more curved lens shape of thing side surface, be conducive to the correction of astigmatism, and can strengthen improving various aberrations.Preferably, can meet following condition :-3.5< (R3+R4)/(R3-R4) <-0.75.More preferably, can meet following condition :-2.5< (R3+R4)/(R3-R4) <-0.95.
Optics knot is f as the focal length of camera lens, and the focal length of the 5th lens is f5, meets following condition :-1.5<f/f5<0.8.Thus, can effectively revise Petzval and the number of optics knot as camera lens, contribute to the focus of center and surrounding visual field more to concentrate on a pair of focal plane, to promote resolving power.Preferably, can meet following condition :-1.2<f/f5<0.4.
The thickness of the 3rd lens on optical axis is CT3, and the thickness of the 6th lens on optical axis is CT6, meets following condition: 0<CT3/CT6<1.0.By the thickness of suitable configuration lens, contribute to the manufacture of optics knot as camera lens, and there is the function of the miniaturization of maintaining simultaneously.
The radius-of-curvature of the 3rd lens thing side surface is R5, the 3rd lens are R6 as the radius-of-curvature of side surface, the radius-of-curvature of the 5th lens thing side surface is R9, the 5th lens are R10 as the radius-of-curvature of side surface, meet following condition: | (R5-R6)/(R5+R6) |+| (R9-R10)/(R9+R10) | <0.70.Contribute to revise aberration, and reduce the susceptibility of optics knot as camera lens.
Optics knot also can comprise an aperture as camera lens, wherein as side surface, the distance on optical axis is SD to aperture to the six lens, as side surface, the distance on optical axis is TD to first lens thing side surface to the six lens, meets following condition: 0.80<SD/TD<1.05.Thus, can in the heart far away and wide-angle characteristic, obtain well balancedly, make optics knot obtain sufficient field angle as camera lens and be unlikely to make described optics knot long as the overall total length of camera lens.
The focal length of the 5th lens is f5, and the focal length of the 6th lens is f6, meets following condition :-0.3<f6/f5<1.1.Thus, contribute to promote resolving power, and shorten back focal length, maintain miniaturization.
The abbe number of the second lens is V2, and the abbe number of the 5th lens is V5, meets following condition: 30<V2+V5<57.Thus, contribute to the correction of aberration.
As side surface, to imaging surface, the distance on optical axis is BFL to the 6th lens, and to imaging surface, the distance on optical axis is TTL to first lens thing side surface, meets following condition: 0.10<BFL/TTL<0.23.Thus, suitably adjust the back focal length of optics knot as camera lens, contribute to maintain its miniaturization.
The 4th lens and the spacing distance of the 5th lens on optical axis are T45, the thickness of the 5th lens on optical axis is CT5, the maximum effective diameter position of intersection point to the five lens thing side surfaces of the 5th lens thing side surface on optical axis is SAG51 in the horizontal shift distance of optical axis, meets following condition :-2.5< (T45+SAG51)/CT5<-0.9.Except being conducive to, the making and moulding of eyeglass, also to contribute to reduce the required space of eyeglass assembled configuration.
First lens, the second lens, the 3rd lens, the 4th lens, the 5th lens and the 6th lens are Σ CT respectively at the summation of thickness on optical axis, as side surface, the distance on optical axis is TD to first lens thing side surface to the six lens, meets following condition: 0.65< Σ CT/TD<0.85.Thus, can effectively maintain its miniaturization.
Optics provided by the invention is tied as in camera lens, and the material of lens can be plastics or glass.When lens material is plastics, can effectively reduce production costs.The another material when lens is glass, can increase the degree of freedom of optics knot as the configuration of camera lens refracting power.In addition, optics is tied as the thing side surface of six lens of first lens to the in camera lens and be can be aspheric surface as side surface, aspheric surface can easily be made into the shape beyond sphere, obtain more control variable, in order to subdue aberration, and then the number of the lens of reduction use, therefore can effectively reduce the total length of optics knot of the present invention as camera lens.
Moreover optics provided by the invention is tied as in camera lens, if lens surface is convex surface, represent that lens surface is convex surface in dipped beam axle place; If lens surface is concave surface, represent that lens surface is concave surface in dipped beam axle place.In addition, optics of the present invention is tied as in camera lens, and at least one diaphragm can be set on demand, to reduce parasitic light, contributes to promote the quality of image.
Optics of the present invention is tied as in camera lens, and aperture configuration can be preposition aperture or mid-aperture, and wherein preposition aperture meaning is that aperture is arranged between object and first lens, and mid-aperture represents that aperture is arranged between first lens and imaging surface.If aperture is preposition aperture, can make optics knot produce longer distance as the outgoing pupil (Exit Pupil) of camera lens with imaging surface, make it have the heart far away (Telecentric) effect, and can increase the efficiency of CCD or the CMOS reception image of Image Sensor; If mid-aperture, contributes to expand the field angle of system, make optics knot there is the advantage of wide-angle lens as camera lens.
Optics of the present invention knot as camera lens also visual demand be applied in the optical system of mobile focusing, and have the characteristic of good aberration correction and good image quality concurrently, can many-side be applied in the electronic image systems such as 3D (three-dimensional) image capture, digital camera, mobile device, digital flat panel.
According to above-mentioned embodiment, below propose specific embodiment and coordinate accompanying drawing to be described in detail.
< the first embodiment >
Please refer to Fig. 1 and Fig. 2, wherein Fig. 1 illustrates according to a kind of optics of first embodiment of the invention and ties the schematic diagram as camera lens, and Fig. 2 is followed successively by the optics knot of the first embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.As shown in Figure 1, optics knot extremely comprises aperture 100, first lens 110, the second lens 120, the 3rd lens 130, the 4th lens 140, the 5th lens 150, the 6th lens 160, infrared ray filtering optical filter 180 and imaging surface 170 as side as camera lens successively by thing side.
First lens 110 has positive refracting power, and is plastic material, and the thing side surface 111 of first lens 110 is convex surface, and it is concave surface as side surface 112, and is all aspheric surface.
The second lens 120 have negative refracting power, and are plastic material, and the thing side surface 121 of the second lens 120 is concave surface, and it is convex surface as side surface 122, and is all aspheric surface, and thing side surface 121 and all have the point of inflexion as side surface 122.
The 3rd lens 130 have positive refracting power, and are plastic material, and the thing side surface 131 of the 3rd lens 130 is convex surface, and it is concave surface as side surface 132, and is all aspheric surface, and thing side surface 131 exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.
The 4th lens 140 have positive refracting power, and are plastic material, and the thing side surface 141 of the 4th lens 140 is concave surface, and it is convex surface as side surface 142, and is all aspheric surface.
The 5th lens 150 have negative refracting power, and are plastic material, and the thing side surface 151 of the 5th lens 150 is concave surface, and it is convex surface as side surface 152, and is all aspheric surface.
The 6th lens 160 have negative refracting power, and are plastic material, and the thing side surface 161 of the 6th lens 160 is convex surface, and it is concave surface as side surface 162, and is all aspheric surface, and has the point of inflexion as side surface 162.
Infrared ray filtering optical filter 180 is glass material, and it is arranged between the 6th lens 160 and imaging surface 170 and does not affect the focal length of optics knot as camera lens.
The aspheric curvilinear equation formula of above-mentioned each lens is expressed as follows:
; Wherein:
X: the point that in aspheric surface, distance optical axis is Y, itself and the relative distance that is tangential on intersection point tangent plane on aspheric surface optical axis;
Y: the point in aspheric curve and the vertical range of optical axis;
R: radius-of-curvature;
K: conical surface coefficient; And
Ai: i rank asphericity coefficient.
The optics of the first embodiment is tied as in camera lens, and optics knot is f as the focal length of camera lens, and optics knot is Fno as the f-number (f-number) of camera lens, and optics knot is HFOV as the half at maximum visual angle in camera lens, and its numerical value is as follows: f=4.05mm; Fno=2.15; And HFOV=36.7 degree.
The optics of the first embodiment is tied as in camera lens, and the abbe number of the second lens 120 is V2, and the abbe number of the 5th lens 150 is V5, meets following condition: V2+V5=46.6.
The optics of the first embodiment is tied as in camera lens, and the thickness of the 3rd lens 130 on optical axis is CT3, and the thickness of the 6th lens 160 on optical axis is CT6, meets following condition: CT3/CT6=0.50.
Coordinate with reference to Figure 19, it illustrates the schematic diagram of Fig. 1 optics knot as the 5th lens 150 parameter S AG51 in camera lens.As shown in Figure 19, in the horizontal shift distance of optical axis, for SAG51, (horizontal shift distance is negative value towards thing side direction in the maximum effective diameter position of intersection point to the five lens 150 thing side surfaces 151 of the 5th lens 150 thing side surfaces 151 on optical axis, towards picture side direction be on the occasion of), the 4th lens 140 and the spacing distance of the 5th lens 150 on optical axis are T45, the thickness of the 5th lens 150 on optical axis is CT5, meets following condition: (T45+SAG51)/CT5=-1.58.
The optics of the first embodiment is tied as in camera lens, and the radius-of-curvature of the second lens 120 thing side surfaces 121 is R3, and the second lens 120 are R4 as the radius-of-curvature of side surface 122, meet following condition: (R3+R4)/(R3-R4)=-1.92.
The optics of the first embodiment is tied as in camera lens, the radius-of-curvature of the 3rd lens 130 thing side surfaces 131 is R5, the 3rd lens 130 are R6 as the radius-of-curvature of side surface 132, the radius-of-curvature of the 5th lens 150 thing side surfaces 151 is R9, the 5th lens 150 are R10 as the radius-of-curvature of side surface 152, meet following condition: | (R5-R6)/(R5+R6) |+| (R9-R10)/(R9+R10) |=0.37.
The optics of the first embodiment is tied as in camera lens, and optics knot is f as the focal length of camera lens, and the focal length of the 5th lens 150 is f5, and the focal length of the 6th lens 160 is f6, meets following condition: f/f5=-0.33; And f6/f5=0.59.
The optics of the first embodiment is tied as in camera lens, to the 6th lens 160, as side surface 162, the distance on optical axis is SD to aperture 100, to the 6th lens 160, as side surface 162, the distance on optical axis is TD to first lens 110 thing side surfaces 111, first lens 110, the second lens 120, the 3rd lens 130, the 4th lens 140, the 5th lens 150 and the 6th lens 160 are Σ CT respectively at the summation of thickness on optical axis, meet following condition: SD/TD=0.93; And Σ CT/TD=0.70.
The optics of the first embodiment is tied as in camera lens, the 6th lens 160 be BFL as side surface 162 to the distance of imaging surface 170 on optical axis, first lens 110 thing side surfaces 111 to the distance of imaging surface 170 on optical axis is TTL, meets following condition: BFL/TTL=0.18.
Coordinate again with reference to lower list one and table two.
Table one is the detailed structured data of Fig. 1 the first embodiment, and wherein the unit of radius-of-curvature, thickness and focal length is mm, and surperficial 0-16 represents the surface to picture side by thing side successively.Table two is the aspherical surface data in the first embodiment, and wherein, k represents the conical surface coefficient in aspheric curve equation, and A1-A16 represents each surperficial 1-16 rank asphericity coefficient.In addition, the schematic diagram that following embodiment form is corresponding each embodiment and aberration curve figure, in form the definition of data all identical with the table one of the first embodiment and the definition of table two, do not add and repeat at this.
< the second embodiment >
Please refer to Fig. 3 and Fig. 4, wherein Fig. 3 illustrates according to a kind of optics of second embodiment of the invention and ties the schematic diagram as camera lens, and Fig. 4 is followed successively by the optics knot of the second embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.As shown in Figure 3, optics knot extremely comprises aperture 200, first lens 210, the second lens 220, the 3rd lens 230, the 4th lens 240, the 5th lens 250, the 6th lens 260, infrared ray filtering optical filter 280 and imaging surface 270 as side as camera lens successively by thing side.
First lens 210 has positive refracting power, and is plastic material, and the thing side surface 211 of first lens 210 is convex surface, and it is concave surface as side surface 212, and is all aspheric surface.
The second lens 220 have negative refracting power, and are plastic material, and the thing side surface 221 of the second lens 220 is concave surface, and it is concave surface as side surface 222, and is all aspheric surface, and thing side surface 221 has the point of inflexion.
The 3rd lens 230 have positive refracting power, and are plastic material, and the thing side surface 231 of the 3rd lens 230 is convex surface, and it is concave surface as side surface 232, and is all aspheric surface, and thing side surface 231 exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.
The 4th lens 240 have positive refracting power, and are plastic material, and the thing side surface 241 of the 4th lens 240 is concave surface, and it is convex surface as side surface 242, and is all aspheric surface.
The 5th lens 250 have negative refracting power, and are plastic material, and the thing side surface 251 of the 5th lens 250 is concave surface, and it is convex surface as side surface 252, and is all aspheric surface.
The 6th lens 260 have negative refracting power, and are plastic material, and the thing side surface 261 of the 6th lens 260 is convex surface, and it is concave surface as side surface 262, and is all aspheric surface, and has the point of inflexion as side surface 262.
Infrared ray filtering optical filter 280 is glass material, and it is arranged between the 6th lens 260 and imaging surface 270 and does not affect the focal length of optics knot as camera lens.
Please coordinate with reference to lower list three and table four.
In the second embodiment, aspheric curvilinear equation formula is expressed as the form of the first embodiment.In addition, the definition of following table parameter is all identical with the first embodiment, and not in this to go forth.
Cooperation table three and table four can be extrapolated lower column data:
< the 3rd embodiment >
Please refer to Fig. 5 and Fig. 6, wherein Fig. 5 illustrates according to a kind of optics of third embodiment of the invention and ties the schematic diagram as camera lens, and Fig. 6 is followed successively by the optics knot of the 3rd embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.As shown in Figure 5, optics knot extremely comprises aperture 300, first lens 310, the second lens 320, the 3rd lens 330, the 4th lens 340, the 5th lens 350, the 6th lens 360, infrared ray filtering optical filter 380 and imaging surface 370 as side as camera lens successively by thing side.
First lens 310 has positive refracting power, and is plastic material, and the thing side surface 311 of first lens 310 is convex surface, and it is convex surface as side surface 312, and is all aspheric surface.
The second lens 320 have negative refracting power, and are plastic material, and the thing side surface 321 of the second lens 320 is concave surface, and it is convex surface as side surface 322, and is all aspheric surface, and thing side surface 321 and have the point of inflexion as side surface 322.
The 3rd lens 330 have negative refracting power, and are plastic material, and the thing side surface 331 of the 3rd lens 330 is convex surface, and it is concave surface as side surface 332, and is all aspheric surface, and thing side surface 331 exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.
The 4th lens 340 have positive refracting power, and are plastic material, and the thing side surface 341 of the 4th lens 340 is concave surface, and it is convex surface as side surface 342, and is all aspheric surface.
The 5th lens 350 have negative refracting power, and are plastic material, and the thing side surface 351 of the 5th lens 350 is concave surface, and it is convex surface as side surface 352, and is all aspheric surface.
The 6th lens 360 have negative refracting power, and are plastic material, and the thing side surface 361 of the 6th lens 360 is convex surface, and it is concave surface as side surface 362, and is all aspheric surface, and has the point of inflexion as side surface 362.
Infrared ray filtering optical filter 380 is glass material, is arranged between the 6th lens 360 and imaging surface 370 and does not affect the focal length of optics knot as camera lens.
Please coordinate with reference to lower list five and table six.
In the 3rd embodiment, aspheric curvilinear equation formula is expressed as the form of the first embodiment.In addition, the definition of following table parameter is all identical with the first embodiment, and not in this to go forth.
Cooperation table five and table six can be extrapolated lower column data:
< the 4th embodiment >
Please refer to Fig. 7 and Fig. 8, wherein Fig. 7 illustrates according to a kind of optics of fourth embodiment of the invention and ties the schematic diagram as camera lens, and Fig. 8 is followed successively by the optics knot of the 4th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.As shown in Figure 7, optics knot extremely comprises aperture 400, first lens 410, the second lens 420, the 3rd lens 430, the 4th lens 440, the 5th lens 450, the 6th lens 460, infrared ray filtering optical filter 480 and imaging surface 470 as side as camera lens successively by thing side.
First lens 410 has positive refracting power, and is plastic material, and the thing side surface 411 of first lens 410 is convex surface, and it is concave surface as side surface 412, and is all aspheric surface.
The second lens 420 have negative refracting power, and are plastic material, and the thing side surface 421 of the second lens 420 is concave surface, and it is convex surface as side surface 422, and is all aspheric surface, and thing side surface 421 and have the point of inflexion as side surface 422.
The 3rd lens 430 have positive refracting power, and are plastic material, and the thing side surface 431 of the 3rd lens 430 is convex surface, and it is concave surface as side surface 432, and is all aspheric surface, and thing side surface 431 exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.
The 4th lens 440 have positive refracting power, and are plastic material, and the thing side surface 441 of the 4th lens 440 is concave surface, and it is convex surface as side surface 442, and is all aspheric surface.
The 5th lens 450 have negative refracting power, and are plastic material, and the thing side surface 451 of the 5th lens 450 is concave surface, and it is convex surface as side surface 452, and is all aspheric surface.
The 6th lens 460 have negative refracting power, and are plastic material, and the thing side surface 461 of the 6th lens 460 is concave surface, and it is concave surface as side surface 462, and is all aspheric surface, and has the point of inflexion as side surface 462.
Infrared ray filtering optical filter 480 is glass material, is arranged between the 6th lens 460 and imaging surface 470 and does not affect the focal length of optics knot as camera lens.
Please coordinate with reference to lower list seven and table eight.
In the 4th embodiment, aspheric curvilinear equation formula is expressed as the form of the first embodiment.In addition, the definition of following table parameter is all identical with the first embodiment, and not in this to go forth.
Cooperation table seven and table eight can be extrapolated lower column data:
< the 5th embodiment >
Please refer to Fig. 9 and Figure 10, wherein Fig. 9 illustrates according to a kind of optics of fifth embodiment of the invention and ties the schematic diagram as camera lens, and Figure 10 is followed successively by the optics knot of the 5th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.As shown in Figure 9, optics knot extremely comprises aperture 500, first lens 510, the second lens 520, the 3rd lens 530, the 4th lens 540, the 5th lens 550, the 6th lens 560, infrared ray filtering optical filter 580 and imaging surface 570 as side as camera lens successively by thing side.
First lens 510 has positive refracting power, and is plastic material, and the thing side surface 511 of first lens 510 is convex surface, and it is concave surface as side surface 512, and is all aspheric surface.
The second lens 520 have negative refracting power, and are plastic material, and the thing side surface 521 of the second lens 520 is concave surface, and it is convex surface as side surface 522, and is all aspheric surface, and thing side surface 521 and all have the point of inflexion as side surface 522.
The 3rd lens 530 have negative refracting power, and are plastic material, and the thing side surface 531 of the 3rd lens 530 is convex surface, and it is concave surface as side surface 532, and is all aspheric surface, and thing side surface 531 exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.
The 4th lens 540 have positive refracting power, and are plastic material, and the thing side surface 541 of the 4th lens 540 is convex surface, and it is convex surface as side surface 542, and is all aspheric surface.
The 5th lens 550 have negative refracting power, and are plastic material, and the thing side surface 551 of the 5th lens 550 is concave surface, and it is convex surface as side surface 552, and is all aspheric surface.
The 6th lens 560 have negative refracting power, and are plastic material, and the thing side surface 561 of the 6th lens 560 is convex surface, and it is concave surface as side surface 562, and is all aspheric surface, and has the point of inflexion as side surface 562.
Infrared ray filtering optical filter 580 is glass material, is arranged between the 6th lens 560 and imaging surface 570 and does not affect the focal length of optics knot as camera lens.
Please coordinate with reference to lower list nine and table ten.
In the 5th embodiment, aspheric curvilinear equation formula is expressed as the form of the first embodiment.In addition, the definition of following table parameter is all identical with the first embodiment, and not in this to go forth.
Cooperation table nine and table ten can be extrapolated lower column data:
< the 6th embodiment >
Please refer to Figure 11 and Figure 12, wherein Figure 11 illustrates according to a kind of optics of sixth embodiment of the invention and ties the schematic diagram as camera lens, and Figure 12 is followed successively by the optics knot of the 6th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.As shown in Figure 11, optics knot extremely comprises first lens 610, aperture 600, the second lens 620, the 3rd lens 630, the 4th lens 640, the 5th lens 650, the 6th lens 660, infrared ray filtering optical filter 680 and imaging surface 670 as side as camera lens successively by thing side.
First lens 610 has positive refracting power, and is plastic material, and the thing side surface 611 of first lens 610 is convex surface, and it is concave surface as side surface 612, and is all aspheric surface.
The second lens 620 have negative refracting power, and are plastic material, and the thing side surface 621 of the second lens 620 is concave surface, and it is plane as side surface 622, and is all aspheric surface, and thing side surface 621 has the point of inflexion.
The 3rd lens 630 have negative refracting power, and are plastic material, and the thing side surface 631 of the 3rd lens 630 is convex surface, and it is concave surface as side surface 632, and is all aspheric surface, and thing side surface 631 exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.
The 4th lens 640 have positive refracting power, and are plastic material, and the thing side surface 641 of the 4th lens 640 is concave surface, and it is convex surface as side surface 642, and is all aspheric surface.
The 5th lens 650 have negative refracting power, and are plastic material, and the thing side surface 651 of the 5th lens 650 is concave surface, and it is convex surface as side surface 652, and is all aspheric surface.
The 6th lens 660 have negative refracting power, and are plastic material, and the thing side surface 661 of the 6th lens 660 is convex surface, and it is concave surface as side surface 662, and is all aspheric surface, and has the point of inflexion as side surface 662.
Infrared ray filtering optical filter 680 is glass material, is arranged between the 6th lens 660 and imaging surface 670 and does not affect the focal length of optics knot as camera lens.
Please coordinate with reference to lower list 11 and table ten two.
In the 6th embodiment, aspheric curvilinear equation formula is expressed as the form of the first embodiment.In addition, the definition of following table parameter is all identical with the first embodiment, and not in this to go forth.
Cooperation table ten one and table ten two can be extrapolated lower column data:
< the 7th embodiment >
Please refer to Figure 13 and Figure 14, wherein Figure 13 illustrates according to a kind of optics of seventh embodiment of the invention and ties the schematic diagram as camera lens, and Figure 14 is followed successively by the optics knot of the 7th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.As shown in Figure 13, optics knot extremely comprises aperture 700, first lens 710, the second lens 720, the 3rd lens 730, the 4th lens 740, the 5th lens 750, the 6th lens 760, infrared ray filtering optical filter 780 and imaging surface 770 as side as camera lens successively by thing side.
First lens 710 has positive refracting power, and is plastic material, and the thing side surface 711 of first lens 710 is convex surface, and it is concave surface as side surface 712, and is all aspheric surface.
The second lens 720 have negative refracting power, and are plastic material, and the thing side surface 721 of the second lens 720 is concave surface, and it is convex surface as side surface 722, and is all aspheric surface, and thing side surface 721 and have the point of inflexion as side surface 722.
The 3rd lens 730 have positive refracting power, and are plastic material, and the thing side surface 731 of the 3rd lens 730 is convex surface, and it is convex surface as side surface 732, and is all aspheric surface, and thing side surface 731 exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.
The 4th lens 740 have negative refracting power, and are plastic material, and the thing side surface 741 of the 4th lens 740 is concave surface, and it is convex surface as side surface 742, and is all aspheric surface.
The 5th lens 750 have negative refracting power, and are plastic material, and the thing side surface 751 of the 5th lens 750 is concave surface, and it is convex surface as side surface 752, and is all aspheric surface.
The 6th lens 760 have negative refracting power, and are plastic material, and the thing side surface 761 of the 6th lens 760 is convex surface, and it is concave surface as side surface 762, and is all aspheric surface, and has the point of inflexion as side surface 762.
Infrared ray filtering optical filter 780 is glass material, is arranged between the 6th lens 760 and imaging surface 770 and does not affect the focal length of optics knot as camera lens.
Please coordinate with reference to lower list 13 and table ten four.
In the 7th embodiment, aspheric curvilinear equation formula is expressed as the form of the first embodiment.In addition, the definition of following table parameter is all identical with the first embodiment, and not in this to go forth.
Cooperation table ten three and table ten four can be extrapolated lower column data:
< the 8th embodiment >
Please refer to Figure 15 and Figure 16, wherein Figure 15 illustrates according to a kind of optics of eighth embodiment of the invention and ties the schematic diagram as camera lens, and Figure 16 is followed successively by the optics knot of the 8th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.As shown in Figure 15, optics knot extremely comprises aperture 800, first lens 810, the second lens 820, the 3rd lens 830, the 4th lens 840, the 5th lens 850, the 6th lens 860, infrared ray filtering optical filter 880 and imaging surface 870 as side as camera lens successively by thing side.
First lens 810 has positive refracting power, and is plastic material, and the thing side surface 811 of first lens 810 is convex surface, and it is convex surface as side surface 812, and is all aspheric surface.
The second lens 820 have negative refracting power, and are plastic material, and the thing side surface 821 of the second lens 820 is concave surface, and it is concave surface as side surface 822, and is all aspheric surface, and thing side surface 821 has the point of inflexion.
The 3rd lens 830 have positive refracting power, and are plastic material, and the thing side surface 831 of the 3rd lens 830 is convex surface, and it is concave surface as side surface 832, and is all aspheric surface, and thing side surface 831 exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.
The 4th lens 840 have positive refracting power, and are plastic material, and the thing side surface 841 of the 4th lens 840 is concave surface, and it is convex surface as side surface 842, and is all aspheric surface.
The 5th lens 850 have negative refracting power, and are plastic material, and the thing side surface 851 of the 5th lens 850 is concave surface, and it is convex surface as side surface 852, and is all aspheric surface.
The 6th lens 860 have negative refracting power, and are plastic material, and the thing side surface 861 of the 6th lens 860 is convex surface, and it is concave surface as side surface 862, and is all aspheric surface, and has the point of inflexion as side surface 862.
Infrared ray filtering optical filter 880 is glass material, is arranged between the 6th lens 860 and imaging surface 870 and does not affect the focal length of optics knot as camera lens.
Please coordinate with reference to lower list 15 and table ten six.
In the 8th embodiment, aspheric curvilinear equation formula is expressed as the form of the first embodiment.In addition, the definition of following table parameter is all identical with the first embodiment, and not in this to go forth.
Cooperation table ten five and table ten six can be extrapolated lower column data:
< the 9th embodiment >
Please refer to Figure 17 and Figure 18, wherein Figure 17 illustrates according to a kind of optics of ninth embodiment of the invention and ties the schematic diagram as camera lens, and Figure 18 is followed successively by the optics knot of the 9th embodiment from left to right as longitudinal spherical aberration, the astigmatism curvature of field and the distortion curve figure of camera lens.As shown in Figure 17, optics knot extremely comprises first lens 910, aperture 900, the second lens 920, the 3rd lens 930, the 4th lens 940, the 5th lens 950, the 6th lens 960, infrared ray filtering optical filter 980 and imaging surface 970 as side as camera lens successively by thing side.
First lens 910 has positive refracting power, and is plastic material, and the thing side surface 911 of first lens 910 is convex surface, and it is concave surface as side surface 912, and is all aspheric surface.
The second lens 920 have negative refracting power, and are plastic material, and the thing side surface 921 of the second lens 920 is concave surface, and it is convex surface as side surface 922, and is all aspheric surface, and thing side surface 921 and have the point of inflexion as side surface 922.
The 3rd lens 930 have positive refracting power, and are plastic material, and the thing side surface 931 of the 3rd lens 930 is convex surface, and it is concave surface as side surface 932, and is all aspheric surface, and thing side surface 931 exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.
The 4th lens 940 have positive refracting power, and are plastic material, and the thing side surface 941 of the 4th lens 940 is concave surface, and it is convex surface as side surface 942, and is all aspheric surface.
The 5th lens 950 have positive refracting power, and are plastic material, and the thing side surface 951 of the 5th lens 950 is concave surface, and it is convex surface as side surface 952, and is all aspheric surface.
The 6th lens 960 have negative refracting power, and are plastic material, and the thing side surface 961 of the 6th lens 960 is convex surface, and it is concave surface as side surface 962, and is all aspheric surface, and has the point of inflexion as side surface 962.
Infrared ray filtering optical filter 980 is glass material, is arranged between the 6th lens 960 and imaging surface 970 and does not affect the focal length of optics knot as camera lens.
Please coordinate with reference to lower list 17 and table ten eight.
In the 9th embodiment, aspheric curvilinear equation formula is expressed as the form of the first embodiment.In addition, the definition of following table parameter is all identical with the first embodiment, and not in this to go forth.
Cooperation table ten seven and table ten eight can be extrapolated lower column data:
Although the present invention discloses as above with embodiment; so it is not in order to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing various changes and retouching, the scope that therefore protection scope of the present invention ought define depending on appended claims is as the criterion.
Claims (23)
1. optics is tied as a camera lens, is extremely comprised successively as side by thing side:
One first lens, has positive refracting power, and its thing side surface is convex surface;
One second lens, have negative refracting power, and its thing side surface is concave surface;
One the 3rd lens, have refracting power;
One the 4th lens, have refracting power;
One the 5th lens, have refracting power, and its thing side surface is concave surface, and it is convex surface as side surface, and at least one surface of wherein said the 5th lens is aspheric surface; And
One the 6th lens, have refracting power, and it is concave surface as side surface, its thing side surface and be all aspheric surface as side surface, wherein said the 6th lens there is at least one point of inflexion as side surface;
The radius-of-curvature of wherein said the second lens thing side surface is R3, and described the second lens are R4 as the radius-of-curvature of side surface, and described optics knot is f as the focal length of camera lens, and the focal length of described the 5th lens is f5, meets following condition:
-5.0< (R3+R4)/(R3-R4) <-0.4; And
-1.5<f/f5<0.8。
2. optics as claimed in claim 1 is tied as camera lens, wherein said the 4th lens be convex surface as side surface.
3. optics as claimed in claim 2 is tied as camera lens, and wherein said the 6th lens have negative refracting power.
4. optics as claimed in claim 3 is tied as camera lens, and the thing side surface of wherein said the 6th lens is convex surface.
5. optics as claimed in claim 2 is tied as camera lens, and wherein said the 4th lens have positive refracting power.
6. optics as claimed in claim 5 is tied as camera lens, and wherein said the 5th lens have negative refracting power.
7. optics as claimed in claim 2 is tied as camera lens, wherein said the second lens be convex surface as side surface.
8. optics as claimed in claim 7 is tied as camera lens, wherein said first lens be concave surface as side surface.
9. optics as claimed in claim 1 is tied as camera lens, and wherein said optics knot is f as the focal length of camera lens, and the focal length of described the 5th lens is f5, meets following condition:
-1.2<f/f5<0.4。
10. optics as claimed in claim 9 is tied as camera lens, and the thickness of wherein said the 3rd lens on optical axis is CT3, and the thickness of described the 6th lens on optical axis is CT6, meets following condition:
0<CT3/CT6<1.0。
11. optics as claimed in claim 9 are tied as camera lens, the radius-of-curvature of wherein said the 3rd lens thing side surface is R5, described the 3rd lens are R6 as the radius-of-curvature of side surface, the radius-of-curvature of described the 5th lens thing side surface is R9, described the 5th lens are R10 as the radius-of-curvature of side surface, meet following condition:
|(R5-R6)/(R5+R6)|+|(R9-R10)/(R9+R10)|<0.70。
12. optics as claimed in claim 9 are tied as camera lens, and the radius-of-curvature of wherein said the second lens thing side surface is R3, and described the second lens are R4 as the radius-of-curvature of side surface, meet following condition:
-3.5<(R3+R4)/(R3-R4)<-0.75。
13. optics as claimed in claim 9 are tied as camera lens, the thing side surface of wherein said the 3rd lens and be all aspheric surface as side surface, and the thing side surface of described the 3rd lens is convex surface and exists convex surface to turn the variation of concave surface by dipped beam axle place to periphery place.
14. optics as claimed in claim 9 are tied as camera lens, also comprise:
One aperture, to described the 6th lens, as side surface, the distance on optical axis is SD to wherein said aperture, to described the 6th lens, as side surface, the distance on optical axis is TD to described first lens thing side surface, meets following condition:
0.80<SD/TD<1.05。
15. optics as claimed in claim 9 are tied as camera lens, and the focal length of wherein said the 5th lens is f5, and the focal length of described the 6th lens is f6, meets following condition:
-0.3<f6/f5<1.1。
16. optics as claimed in claim 1 are tied as camera lens, and wherein said the 5th lens have negative refracting power.
17. optics as claimed in claim 16 are tied as camera lens, the radius-of-curvature of wherein said the 3rd lens thing side surface is R5, described the 3rd lens are R6 as the radius-of-curvature of side surface, the radius-of-curvature of described the 5th lens thing side surface is R9, described the 5th lens are R10 as the radius-of-curvature of side surface, meet following condition:
|(R5-R6)/(R5+R6)|+|(R9-R10)/(R9+R10)|<0.70。
18. optics as claimed in claim 16 are tied as camera lens, and the abbe number of wherein said the second lens is V2, and the abbe number of described the 5th lens is V5, meets following condition:
30<V2+V5<57。
19. optics as claimed in claim 16 are tied as camera lens, and the radius-of-curvature of wherein said the second lens thing side surface is R3, and described the second lens are R4 as the radius-of-curvature of side surface, meet following condition:
-2.5<(R3+R4)/(R3-R4)<-0.95。
20. optics as claimed in claim 16 are tied as camera lens, and as side surface to imaging surface, the distance on optical axis is BFL to wherein said the 6th lens, and described first lens thing side surface to the distance of described imaging surface on optical axis is TTL, meets following condition:
0.10<BFL/TTL<0.23。
21. optics as claimed in claim 16 are tied as camera lens, and at least one surface of wherein said the second lens has at least one point of inflexion.
22. optics as claimed in claim 2 are tied as camera lens, wherein said the 4th lens and the spacing distance of described the 5th lens on optical axis are T45, the thickness of described the 5th lens on optical axis is CT5, the intersection point of described the 5th lens thing side surface on optical axis to the maximum effective diameter position of described the 5th lens thing side surface is SAG51 in the horizontal shift distance of optical axis, meets following condition:
-2.5<(T45+SAG51)/CT5<-0.9。
23. optics as claimed in claim 1 are tied as camera lens, wherein said first lens, described the second lens, described the 3rd lens, described the 4th lens, described the 5th lens and described the 6th lens are Σ CT respectively at the summation of thickness on optical axis, to described the 6th lens, as side surface, the distance on optical axis is TD to described first lens thing side surface, meets following condition:
0.65<ΣCT/TD<0.85。
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Also Published As
| Publication number | Publication date |
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| US8743482B1 (en) | 2014-06-03 |
| CN103913815B (en) | 2016-12-28 |
| CN106918892B (en) | 2019-12-03 |
| TWI487944B (en) | 2015-06-11 |
| TW201317619A (en) | 2013-05-01 |
| CN106918892A (en) | 2017-07-04 |
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